mirror of
https://github.com/matrix-construct/construct
synced 2024-07-14 22:48:36 +02:00
118 lines
2.6 KiB
C++
118 lines
2.6 KiB
C++
// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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// IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#define HAVE_IRCD_UTIL_TIMER_H
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namespace ircd::util
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{
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struct timer;
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}
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struct ircd::util::timer
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{
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IRCD_OVERLOAD(nostart)
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using clock = std::chrono::steady_clock;
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nanoseconds accumulator;
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clock::time_point start;
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bool stopped() const;
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template<class duration = std::chrono::seconds> duration get() const;
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template<class duration = std::chrono::seconds> duration at() const;
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void cont();
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void stop();
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timer(const std::function<void ()> &);
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timer(nostart_t);
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timer();
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};
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/// Default construction will start the timer.
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inline
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ircd::util::timer::timer()
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:accumulator{0ns}
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,start{clock::now()}
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{
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}
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/// timer(timer::nostart)
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inline
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ircd::util::timer::timer(nostart_t)
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:accumulator{0ns}
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,start{clock::time_point::min()}
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{
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}
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inline
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ircd::util::timer::timer(const std::function<void ()> &func)
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:timer{}
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{
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func();
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stop();
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}
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inline void
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ircd::util::timer::stop()
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{
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if(stopped())
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return;
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const auto now(clock::now());
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accumulator += std::chrono::duration_cast<decltype(accumulator)>(now - start);
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start = clock::time_point::min();
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}
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inline void
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ircd::util::timer::cont()
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{
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if(!stopped())
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{
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const auto now(clock::now());
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accumulator += std::chrono::duration_cast<decltype(accumulator)>(now - start);
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}
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start = clock::now();
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}
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template<class duration>
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duration
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ircd::util::timer::at()
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const
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{
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const auto now(clock::now());
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return duration_cast<duration>(now - start);
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}
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template<class duration>
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duration
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ircd::util::timer::get()
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const
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{
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return std::chrono::duration_cast<duration>(accumulator);
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}
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inline bool
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ircd::util::timer::stopped()
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const
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{
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return start == clock::time_point::min();
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}
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